S-90268A412 0-80 x 11/16" Coupling Nuts
Coupling Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from 18-8 stainless steel construction for extended service life in harsh environments
- Enhanced thread engagement with extra long profile and partial threading for secure, vibration-resistant connections
- Precise fine threading with Class 2B fit ensures smooth assembly and reliable torque performance
- Easy installation and removal with external hex drive design compatible with standard wrench tools
- Right-hand UNF thread compatibility for seamless integration with standard industrial components
- Regulatory compliance with RoHS 3 and REACH standards for environmentally responsible manufacturing
- Optimized dimensions (1/4" width, 11/16" length) provide ideal clearance and strength for compact assemblies
Professional Applications & Engineering Value
This extra long coupling nut addresses critical challenges in precision assembly applications where extended thread engagement is essential for structural integrity. The 18-8 stainless steel composition delivers exceptional corrosion resistance, making it ideal for aerospace, instrumentation, and marine environments where moisture and chemicals pose reliability risks. The partially threaded design combined with UNF fine threading provides superior vibration resistance in dynamic load conditions, while the Class 2B thread fit ensures consistent engagement without binding. The external hex drive facilitates quick installation in confined spaces, reducing assembly time for maintenance and production lines. These engineering features make it particularly valuable for connecting threaded rods, extending shaft lengths, and creating precise spacing in mechanical systems requiring reliable coupling solutions.
Specification Summary & Compliance
This coupling nut features 0-80 UNF fine threads with Class 2B thread fit per Unified National Fine standards, ensuring precise dimensional accuracy and interchangeability. The partial threading extends to a minimum length of 3/16" with overall dimensions of 1/4" width and 11/16" length. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental safety standards for hazardous substance restrictions.
